摘要
【目的】表型多样性研究可以揭示地理变异规律,了解表型分化程度,对野生植物资源保护和合理开发利用提供理论基础,通过对唐古特白刺的叶片、果实、种子等形态学表型特征的系统研究,了解其表型分化程度,地理变异规律以及居群间和居群内的变异特征,对唐古特白刺资源的合理开发利用提供指导。【方法】对柴达木盆地6个天然分布的唐古特白刺居群的14个表型性状进行变异分析、相关性分析、主成分分析和聚类分析。【结果】对唐古特白刺14个表型性状的多重比较和方差分析表明,各个表型性状在不同居群间都表现出不同程度的差异性,各性状的变异系数分布在7.67%~48.95%之间,东西冠幅、南北冠幅、叶片鲜质量和单果质量是变异较大的性状;相关性分析显示,除东西冠幅、叶片鲜质量以及果形指数与其他性状间没有显著的相关关系外,其他性状之间存在显著或极显著的相关关系,地理环境因子与叶厚和叶形指数间的相关性显著;提取的3个主成分累计贡献率达到了97.921%,包含了唐古特白刺表型性状的大部分信息,东西冠幅、南北冠幅、叶长和种子千粒重是影响唐古特白刺的主要表型性状;聚类分析将6个天然居群分为2类,居群1单独为1类,其他居群为1类。【结论】柴达木盆地的野生唐古特白刺资源存在丰富的表型变异,具有很大的开发利用潜力。
【Objective】The study of phenotypic diversity can reveal the law of geographic variation,understand the degree of phenotypic differentiation,and provide a theoretical basis for the protection and rational development and utilization of wild plant resources.This paper analyzed the leaves,fruits,seeds and other morphologies of Nitraria tanguticum Bobr.Learn the systematic study of phenotypic characteristics,understand the degree of phenotypic differentiation,the law of geographic variation,and the variation characteristics between and within populations,and provide guidance for the rational development and utilization of Nitraria tanguticum Bobr.resources.【Method】The 14 phenotypic traits of 6 naturally distributed Nitraria tanguticum Bobr.populations in the Qaidam Basin were analyzed by variance analysis,correlation analysis,principal component analysis and cluster analysis.【Result】The multiple comparison and analysis of variance of 14 phenotypic traits of Nitraria tanguticum Bobr.showed that each phenotypic trait showed different degrees of difference among different populations,and the coefficient of variation of each trait was 7.67%-48.95%,the east-west crown width,north-south crown width,leaf fresh weight and single fruit weight are traits with greater variation;correlation analysis shows that there is no significant correlation between east-west crown width,leaf fresh weight,fruit shape index and other traits In addition to the relationship,there are significant or extremely significant correlations among other traits,and the correlation between geographical environment factors and leaf thickness and leaf shape index is significant;the cumulative contribution rate of the three principal components extracted reaches 97.921%,including Tangut Most of the information about the phenotypic traits of Nitraria tanguticum Bobr.,east-west crown width,north-south crown width,leaf length and seed thousand-grain weight are the main phenotypic traits that affect Nitraria tanguticum Bobr.;cluster analysis divides the 6 natural populations into 2 categories.Group 1 alone is classified as type 1,and other populations are classified as type 1.【Conclusion】The wild Nitraria tanguticum Bobr.resource in the Damu basin has rich phenotypic variation and has great potential for development and utilization.
作者
吉德娟
张得芳
于倩
JI Dejuan;ZHANG Defang;YU Qian(School of Agriculture and Forestry Sciences,Qinghai University,Xining 810016,Qinghai,China;Qinghai Plateau Forest Genetics and Breeding Laboratory,Xining 810016,Qinghai,China)
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2021年第10期57-66,共10页
Journal of Central South University of Forestry & Technology
基金
国家重点研发计划项目(2018YFC0406603)
青海省财政支农资金林业新技术推广项目“青海高原白刺种质资源筛选和无性繁殖技术研究”([2020]SJTG-03)
海东河湟新区国家科技资源支撑型双创特色载体第一批特色科技项目“青海白刺资源高值利用关键技术集成”
青海省科技厅县域创新试点县建设专项(2020-0407-NCC-0001)
青海省基础研究计划项目“丛枝菌根真菌对柴达木盆地枸杞根腐病的防病促生作用”。
关键词
唐古特白刺
表型多样性
主成分分析
聚类分析
Nitraria tanguticum Bobr.
phenotypic diversity
principal component analysis
cluster analysis
